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BMC and BMC-6X Installation and Operation Manual
BMC
SYSTEM
A
B
C
D
Full Modulation Sequencing Control
1
2
RUNPROGRAM
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 30VA MAX
INPUT RATINGS:
USE COPPER WIRE,
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
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10
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15
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17
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22
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24
23
29
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27
26
28
32
30
31
L
N
-
+
+
T
T
O
O
RS-485
mA
GND
VLT
SYS
A
B
C
D
PWR
CUR / VLT
A
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
+
mA
TEMP
OUTDOOR
O
O
TEMP
SYSTEM
EXTENSION
MODULE
CUR / VLT
B
CUR / VLT
C
CUR / VLT
D
CLASS 1 WIRE ONLY.
------
SYSTEM
PROVE
SHUTDOWN
/TSTAT
/SETBACK
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
CAUTION
: RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
CUS
• INSTALLATION AND OPERATION INSTRUCTIONS MANUAL
BMC
AND
BMC-6X
HYDRONIC MODULATING BOILER CONTROL AND EXTENSION
This Weil McLain control is strictly an operating control; it should never be used as a
primary limit or safety control. All equipment must have its own certified limit and safety
controls required by local codes. The installer must verify proper operation and correct any
safety problems prior to the installation of this Weil McLain control.
WARNING
Part Number 550-100-072/0408